mirror of
https://github.com/freebsd/freebsd-src
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1a2b743f6b
from ChangeLog:
(most of this by rillig@)
o lots of style and white-space cleanup
o lots more unit tests for variable modifiers
o simplified description of some functions
o str.c: refactor Str_Match
o var.c: debugging output for :@
constify VarModify parameter
fix :hash modifier on 16-bit platforms
remove unnecessary forward declarations
refactor ApplyModifier_SysV to have less indentation
simplify code for :E and :R
clean up code for :H and :T
refactor ApplyModifiers
* var.c: we need stdint.h on some platforms to get uint32_t
* unit-test/Makefile: we need to supress the specific error
for RE substitution error in modmisc, since it varies accross
different OS.
96 lines
3.1 KiB
Makefile
96 lines
3.1 KiB
Makefile
# $Id: modmisc.mk,v 1.1.1.2 2020/07/04 17:52:46 sjg Exp $
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#
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# miscellaneous modifier tests
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# do not put any dirs in this list which exist on some
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# but not all target systems - an exists() check is below.
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path=:/bin:/tmp::/:.:/no/such/dir:.
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# strip cwd from path.
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MOD_NODOT=S/:/ /g:N.:ts:
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# and decorate, note that $'s need to be doubled. Also note that
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# the modifier_variable can be used with other modifiers.
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MOD_NODOTX=S/:/ /g:N.:@d@'$$d'@
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# another mod - pretend it is more interesting
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MOD_HOMES=S,/home/,/homes/,
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MOD_OPT=@d@$${exists($$d):?$$d:$${d:S,/usr,/opt,}}@
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MOD_SEP=S,:, ,g
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all: modvar modvarloop modsysv mod-HTE emptyvar undefvar
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all: mod-S mod-C mod-at-varname mod-at-resolve
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modsysv:
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@echo "The answer is ${libfoo.a:L:libfoo.a=42}"
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modvar:
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@echo "path='${path}'"
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@echo "path='${path:${MOD_NODOT}}'"
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@echo "path='${path:S,home,homes,:${MOD_NODOT}}'"
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@echo "path=${path:${MOD_NODOTX}:ts:}"
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@echo "path=${path:${MOD_HOMES}:${MOD_NODOTX}:ts:}"
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.for d in ${path:${MOD_SEP}:N.} /usr/xbin
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path_$d?= ${d:${MOD_OPT}:${MOD_HOMES}}/
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paths+= ${d:${MOD_OPT}:${MOD_HOMES}}
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.endfor
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modvarloop:
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@echo "path_/usr/xbin=${path_/usr/xbin}"
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@echo "paths=${paths}"
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@echo "PATHS=${paths:tu}"
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PATHNAMES= a/b/c def a.b.c a.b/c a a.a .gitignore a a.a
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mod-HTE:
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@echo "dirname of '"${PATHNAMES:Q}"' is '"${PATHNAMES:H:Q}"'"
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@echo "basename of '"${PATHNAMES:Q}"' is '"${PATHNAMES:T:Q}"'"
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@echo "suffix of '"${PATHNAMES:Q}"' is '"${PATHNAMES:E:Q}"'"
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@echo "root of '"${PATHNAMES:Q}"' is '"${PATHNAMES:R:Q}"'"
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# When a modifier is applied to the "" variable, the result is discarded.
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emptyvar:
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@echo S:${:S,^$,empty,}
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@echo C:${:C,^$,empty,}
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@echo @:${:@var@${var}@}
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# The :U modifier turns even the "" variable into something that has a value.
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# The resulting variable is empty, but is still considered to contain a
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# single empty word. This word can be accessed by the :S and :C modifiers,
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# but not by the :@ modifier since it explicitly skips empty words.
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undefvar:
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@echo S:${:U:S,^$,empty,}
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@echo C:${:U:C,^$,empty,}
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@echo @:${:U:@var@empty@}
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mod-S:
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@echo :${:Ua b b c:S,a b,,:Q}:
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@echo :${:Ua b b c:S,a b,,1:Q}:
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@echo :${:Ua b b c:S,a b,,W:Q}:
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@echo :${:Ua b b c:S,b,,g:Q}:
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@echo :${:U1 2 3 1 2 3:S,1 2,___,Wg:S,_,x,:Q}:
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mod-C:
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@echo :${:Ua b b c:C,a b,,:Q}:
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@echo :${:Ua b b c:C,a b,,1:Q}:
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@echo :${:Ua b b c:C,a b,,W:Q}:
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@echo :${:Uword1 word2:C,****,____,g:C,word,____,:Q}:
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@echo :${:Ua b b c:C,b,,g:Q}:
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@echo :${:U1 2 3 1 2 3:C,1 2,___,Wg:C,_,x,:Q}:
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# In the :@ modifier, the name of the loop variable can even be generated
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# dynamically. There's no practical use-case for this, and hopefully nobody
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# will ever depend on this, but technically it's possible.
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mod-at-varname:
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@echo :${:Uone two three:@${:Ubar:S,b,v,}@+${var}+@:Q}:
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# The :@ modifier resolves the variables a little more often than expected.
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# In particular, it resolves _all_ variables from the context, and not only
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# the loop variable (in this case v).
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#
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# The d means direct reference, the i means indirect reference.
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RESOLVE= ${RES1} $${RES1}
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RES1= 1d${RES2} 1i$${RES2}
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RES2= 2d${RES3} 2i$${RES3}
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RES3= 3
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mod-at-resolve:
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@echo $@:${RESOLVE:@v@w${v}w@:Q}:
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